JavaScript but It's Ancient Chinese

Published at

4 days ago

Main Article

文言轉換器 Wenyanizer

Introduction

Inspired by the great Wenyan Lang project, which compile ancient Chinese Language to javascript code, I build this project to do the opposite thing -- to parse javascript to Wenyan.

Usage

Install wenyanizer. Run

yarn add wenyanizer

Import and use it in your project

import {js2wy} from 'wenyanizer';

// Or use it in node.js
// const {js2wy} = require('wenyanizer');

js2wy("while(true){console.log('学习')}")

// Output: '恆為是。\n    吾有一言。曰「「学习」」。\n    書之。\n云云。\n'

VSCode Plugin by antfu

You can use Wenyanizer in Wenyan Lang VSCode plugin now.

Examples

Basic Grammars

for(var _rand = 0; _rand < 100; _rand++){
    console.log("哈");
    while(true){
        var 天命 = Math.random();
        if (天命 < 0.5){
            break
        }
    }
}

// 為是一百遍。
//     吾有一言。曰「「哈」」。
//     書之。
//     恆為是。
//         吾有一術。名之曰「十」
//         欲行是術。必先得        
//         乃行是術曰。
//             乃得  Math.random()
//         是謂「十」之術也。

//         施「十」
//         名之曰「天命」。
//         若「天命」小於零又五分者。
//             乃止。
//         云云。
//     云云。
// 云云。

Wrapping JS Native Function Call

var 测试 = JSON.stringify(100);
var 乙 = JSON.stringify({});

// 吾有一術。名之曰「午」
// 欲行是術。必先得一物。曰「_a0」。
// 乃行是術曰。
//     乃得  JSON.stringify(_a0,)
// 是謂「午」之術也。
//
// 施「午」於一百。
// 名之曰「测试」。
// 吾有一物。名之曰「丑」
// 施「午」於「丑」。
// 名之曰「乙」。

Wrapping Nested Structure

var 甲 = 100 % 99;
var 乙 = 100 * 200 + 35 * (48 - 10) * 甲;

// 除一百以九十九。所餘幾何。
// 名之曰「甲」。
// 乘一百以二百。
// 名之曰「寅」。
// 減四十八以一十。
// 乘三十五以其。
// 名之曰「癸」。
// 乘「癸」以「甲」。
// 加「寅」以其。
// 名之曰「乙」。

Hacks

Restricted by current Wenyan grammar, some hacks are required to make this compiler work. When you use grammar that is not well supported by Wenyan, there will be a bunch of functions being added to the top of the compiled file.

Wenyan is still evolving fast, thanks to the devoted author and the great community. We may not need to hack anymore very soon.

You can check the full list of polyfills in HACKS.md.

Roadmap

Name	Status
JS Code Compiled From Wenyan	❌
Closure	✔
Control: While/For/If/Else	✔
Object `var a = {a: 0, b: 1, c: 2}`	✔
Array `[[[0 ,2], [2, []]]]`	✔
`+-*/`	✔
`--, ++, +=, -=, /=`	✔
Distinguish `a++` and `++a`	✔
Wraping global object when necessary, such as `Math`, `JSON`	✔
`console.log`	✔
`a.b = 3`	✔
NewExpression	✔
Function	✔
`this` keyword	✔
`a[b] = 3`	✔
ForOfStatement	✔
Wenyan Lib	WIP
Wenyan Nested Function Call	❌
Optimize Curried Function	❌
RegExp	❌
switch	❌
bit op	❌
`null` `undefined`	❌
DebugExpression	❌
WithStatement	❌
`continue`	❌
debug exp	❌
ForInStatement	❌
throw try...catch...finally	❌
Modules (import, export, require)	❌
`===` (will be compiled to `==`)	❌
`let` & `const` (will be compiled to `var`)	WON'T FIX
es6 ^ (Class, Promise, yield, await...)	WON'T FIX

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